From p. 468 of "Cement Data Book, 2nd edition" by Walter H. Duda 350 Clinker grate cooler parameters Comp't no. 1 2 3 4 5 6 no. of grate rows in comp't 3 6 9 14 14 13 59 end of comp't 3 9 18 32 46 59 middle of comp't 1.5 6 13.5 25 39 52.5 Air consumption CFM/ft2 325 300 250 225 200 152 m3/h-m2 5,944 5,486 4,572 4,115 3,658 2,780 300 250 200 150 100 50 0 1.5 6 13.5 25 39 52.5 325 300

250225 200 y = -0.2679x2 - 32.125x + 358.5 152 Series1 Poly. (Series1)

Inverting the cooler parameters; Clinker grate cooler parameters Comp't no. 6 5 4 3 2 1 no. of grate plates rows 13 14 14 9 6 3 59 end of comp't 59 46 32 18 9 3 middle of comp't 52.5 39 25 13.5 6 1.5 Air consumption CFM/ft2 152 200 225 250 300 325 m3/h-m2 2,780 3,658 4,115 4,572 5,486 5,944

350 300 250 225 200 150 100 50 0 52.5 39 25 13.5 6 1.5 152 200 Series1 Poly. (Series1) y = -0.2679x2 + 35.875x + 120.5 300 250 325

Based on polynomial equation of curve; Clinker grate cooler parameters no. of end of middle of grate comp't comp't plates 13 59 52.5 14 46 39 14 32 25 9 18 13.5 6 9 6 3 3 1.5 59

Point no. on graph 1 2 3 4 5 6 7 8

Comp't no. 6 5 4 3 2 1

Air consumption CFM/ft2 m3/h-m2 156.11 2,855 191.18 3,496 225.71 4,128 259.71 4,750 293.18 5,362 326.11 5,964 358.50 6,556 390.35 7,139